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Speaking to the BBC, a BMW spokesperson said: "We now recognise that there may have been some cases of similar power supply issues in vehicles not covered by the original recall.

"In order to reassure customers with concerns about the safety of their vehicles, we are voluntarily extending the recall.

"We are therefore announcing today that we will take the proactive step of expanding the existing UK recall to cover all vehicles potentially affected by the power supply issue."

The German car maker has said it will open a customer complaints line and will be contacting affected owners directly.

BMW initially recalled cars in the UK after motorist Narayan Gurung - who who was driving with his wife on Christmas Day in 2016 - died when their Ford Fiesta crashed into a tree in a bid to avoid a broken-down BMW.

The BMW had had an electrical fault, causing its brake lights to fail. The car then stalled on a dark A-road.

An investigation by Watchdog has found that the fault could affect a wider number of cars.